Map of the Driftless Area of Wisconsin
“The Driftless Area includes 15,425,920 acres,which is 24,103 square miles, covering all or part of 57 counties in southeast Minnesota, southwest Wisconsin, northeast Iowa and a small portion of northwest Illinois in the Upper Mississippi River Basin. This unique area was by-passed by the last continental ice sheet resulting in a steep, rugged landscape. The area is characterized by karst topography with shallow limestone bedrock, caves and sinkholes.”
Driftless Area Initiative: http://www.driftlessareainitiative.org/
